Bridge lamp



' Nov. 26, 19.40.

H. SANDEL BRIDGE LAMP Filed Aug. 11, 1938 2 Sheets-Sheet l Nov. 26, 1940. H. SANDEL 2,222,859

BRIDGE LAMP Filed Aug. 11, 1958 2 Sheets-Sheet 2 In deza (97." Q/i d'r'z Z Patented Nov. 26, 1940 UNITED STATES azzzpse rarsu'r orr cs BRIDGE LAMP Harry Sandel, Chicago, 111.

Application August 11 Claims.

The present invention relates generally to bridge lamps, and more particularly to a novel and improved mechanism for detachably connecting a reflector with the shade usually em- 5 ployed with such a lamp.

It is an object of this invention to provide in a lamp of the character described having the usual shade associated therewith, a novel and improved means for detachably connecting or associating with said shade a reflector for shielding the light source and for more effectively distributing the light from said light source.

Another object of this invention is to provide novel and improved means for detachably conmeeting with a shade of usual construction for a bridge lamp of a reflector, which reflector when so connected will be effective forshielding the light source to prevent glare and at the same time will more efficiently distribute the light from the light source, said means including only a few simple parts which may be readily and quickly assembled in operative relation, and which is capable of assembly with a shade already constructed and in use, or which may be connected to the shade in the manufacture of the same.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists in certain novel features of construction, arrangement and combination of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changesin the form, proportion, size and minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages of the invention.

For the purpose of facilitating an understanding of my invention, I have illustrated in the accompanying drawings, a preferred embodiment thereof, from an inspection of which, when considered in connection with the following description, my invention, its mode of construction, assembly and operation, and many of its advantages should be readily understood and appreciated.

Referring to the drawings in which the same characters of reference are employed to indicate corresponding or similar parts throughout the several figures of the drawings:

Fig. 1 is a side transverse sectional view of a bridge lamp and shade with my improved reflector assembling means associated therewith;

Fig. 2 is a sectional view taken substantially 1938, Serial No. 224,305

along line 2-2 of Fig. 1 and in the direction of the arrows;

Fig. 3 is a plan view of one form of my reflector connecting means;

Fig. 4 is a bottom plan View t on line 44 of Fig. 1;

Fig. 5 is a view in perspective of ajmodified form of my improved device;

' Fig. 6 is a transverse sectional view of the form illustrated in Fig. 5;

Fig. 7 is a top plan view of the in Fig. 5;

Fig. 8 is a view in perspective of a still further modified form.-

Referring to the drawings more specifically by characters of reference, and particularly to the form illustrated in Figs. 1, 2, 3 and l, the reference character I represents the arm of a bridge lamp or the like, to which is secured by some suitable fastening means, as shown at 5, a'standard lighting socket 2 consisting of an outer casing 2 and provided intermediate its ends with a threaded portion 3 and engaged at its upper end in the usual way to the socket cap 4. The lamp shade I, which is usually associated with the socket, is of conventional construction and is provided 'with the ornamental covering 1" stretched upon a wireframe 8 and having at its upper end and as an integral part of the frame a spider 9 of three or more legs, fixed in a convenient manner to a spider ring II], which is internally threaded as shown at H, to cooperate with the threads 3 of the socket case 2' in such a way that the illumination of the lamp 6 iscausedto register through the shade 1.

' As the construction so far described forms no part of the present invention, it is not thought necessary to describe the same in more detail.

In one form of my device for detachably securing a reflector tothe-shade I, I provide a pair of appropriately drilled and screw threaded openings l6 and I1, arranged at diametrically opposed points in the spider ring I0 for the reception of screws I8 and I9. By means of these screws I detachably secure to the spider ring it a substantially cup shaped member it, which member is disposed against the under side of the spider ring I!) when in assembled relation therewith, as shown at Fig. 2, the said screws l8 and i9 passing through opening I5 provided therefor in the bottom wall of the cup shaped member I l, as shown in Fig. 3.

Associated with this cup shaped member and rigidly secured thereto is a harp shaped tubular member l2, the upper ends of which are fixedly aken substantially form illustrated Gil secured to the bottom wall of the cup shaped member by means of riveting or swaging ends l3 in appropriate holes provided therefor in the member 14.

The member I2 is shaped to conform to the shape of the lamp bulb 6 with enough clearance between the member and the lamp to facilitate removal and replacement of the lamp. The base of the harp l2 has a flattened or cut-out portion 2| which is slotted to fixedly receive the rectangular end 22 of a ferrule 23. The opposite end of the ferrule is screw-threaded, as shown at 24, to engage the internally threaded knob 25.

The harp I2 is adapted to support in operative relation with the shade and lamp, a reflector 20, which reflector is provided adjacent its bottom edge with a depending cylindrical extension 28 adapted to be received in a cup-shaped member or cap 21, the latter having a central opening extending therethrough for the passage of the screw-threaded ferrule 23. The member 21 is secured to the harp l2 and in turn secures the reflector in operative relation by means of the knob 25.

When so assembled, it will be noted that the reflector 20 will have its upper edge disposed against the lamp shade spider 9, which will facilitate in securely holding the reflector in operative position with respect to the shade. The width of the rectangular rivet 22 is less than the diameter of the body of the ferrule 23, thereby forming the shoulder 23, and resting upon the shoulder and separating it from the flattened portion 2| of the harp I 2 is the washer 29, the purpose of which is to more substantially fix the ferrule 23 to the harp l2.

Thus, it will be seen that the light from the lamp bulb 6 will be partially reflected upwardly by reason of the parabolic shape of the reflector 20, and also by reason of its translucence. The reflector 20 is preferably made from any suitable material which will retain the necessary shape and give the necessary translucence, and by reason of its translucence it will present a soft and non-glaring light. It will also be noted that the means hereinabove described will readily lend itself for detachably securing a reflector of the type illustrated at 20 to a bridge lamp for eliminating glare and at the same time for more effectively distributing the light from the lamp. It will be apparent that the assembly may be readily made by reason of the fact that it is only necessary to drill the holes 5 and H in the spider ring I0, and then secure the harp l2 to said spider ring by means of the screws l8 and I9.

In the embodiment illustrated in Figs. 5, 6 and 7, the construction for connecting the reflector 20 to the shade I is the same with the exception that instead of the cup-shaped member Hi, there is utilized a member 30, shown in Fig. 5, which member has rigidly secured thereto by riveting or in some other suitable and well-known manner, the upper ends of the harp l2, which carries the reflector 20. The member 30 may be of a size which is somewhat larger than the spider ring In, so that the same may readily be attached to spider rings of different sizes.

The member 30 is provided with an upstanding flange, which flange has provided therein a plurality of circumferentially spaced bayonet slots 32 opening from the top of the flange, and which are spaced so as to receive the arms 9 of the lamp shade frame. The bayonet slots 32 are cut in the member to such a depth that when the member 30 is assembled with the spider ring ID, the latter will rest on the bottom wall 3| of said member.

In order to secure the harp [2 to the spider ring, it is only necessary to insert the arms 9 into the bayonet slots 32 and a slight turn to the left will complete the assembly. Should the spider ring ll] be of a size smaller than the diameter of the member 30, the said ring may be secured in place by means of a screw 34 extending through a threaded opening in the wall of the member 30 and engaging the spider ring In, as shown more clearly in Figs. 6 and 7 of the drawings. The said screw 34 will be effective for fixedly holding the parts in assembled position.

In the above construction it will be noted that the harp l2 may be secured to the lamp shade in a simple manner and will be securely held thereon by the said screw 34.

In the modification shown in Fig. 8, the harp I2 is secured to the shade by a member 36, which member is provided with the bottom wall 31 and the upstanding flange 38. The bottom wall 3'! is provided with a central opening 39 of such diameter as to clear the bottom end of the socket 2. The flange 38 has provided therein a plurality of circumferentially spaced vertical slots 43 open at their upper ends and spaced to receive the arms 9 of the spider of the shade 1.

The slots 40 will permit the lodging therein of the arms 9, in which position the spider ring II] will substantially rest on the bottom wall 31 of the member 36. As shown in the drawings, the member 36 may be of any diameter larger than the diameter of the spider ring [0, thereby adapting this type of attachment for connection with the lamp shades having spider rings of different sizes. In order to lock the member 36 to the spider, I have provided a cap 4| open at its bottom end and having a central opening 42 in its upper wall, which opening is of such a size as to permit the passage therethrough of the socket 2.

The downwardly depending flange of the cap 4| is provided with inwardly extending projections 43, spaced circiunferentially thereof and are arranged to pass through correspondingly placed bayonet slots 44 provided in the side wall of the member 36. When the cap 4| is placed in the slots 44 and turned to the right, the inwardly extending projections 43 will spring outward slightly by reason of passage over the indentations 45, and finally will fixedly snap into the punched out portions 46, thereby securely fastening the cap to the member 33 against further rotation, (and at the same time looking the spider ring H3 in place.

From the above, it will be apparent that I have provided a novel and improved and highly simplified mechanism, whereby a reflector may be detachably secured in operative relation with the shade of the bridge lamp, which result may be accomplished with a minimum of effort and with only a few simple parts, capable of economical manufacture and assembly.

It will also be noted that the means employed are such as to adapt itself for attachment with shades having different sizes of spider ring supports, and further, the attachment is capable of being accomplished without in any way modifying or altering the construction of the shade structure.

It is believed that my invention, its mode of construction and assembly, and many of its advantages should be readily understood from the foregoing without further description, and it should also be manifest that while preferred embodiments of the invention have been shown and described for illustrative purposes, the structural details are nevertheless capable of wide variation within the purview of my invention as defined in the appended claims.

I claim:

1. In combination with a bridge lamp, having a lamp socket and a lamp shade supported thereon, said shade having a spider and a spider ring whereby same may be attached to said socket, a harp depending from said spider ring and a reflector detachably associated with said harp with its upper edge firmly held against said spider, an annular member to which said harp is fixed, said member being provided with means whereby same 7 may be attached to said spider ring.

2. In combination with a bridge lamp having a lamp socket and a lamp shade supported thereon, said shade having a spider and a spider ring whereby said shade may be attached to said socket, a cup-shaped member detachably associated with said spider ring, a harp fixed to said cupshaped member and depending therefrom, means provided at :the lower portion of said harp for detachably securing a reflector thereto and holding said reflector with the upper edge thereof in firm engagement with said spider.

of in firm engagement with said spider, said last mentioned means including a member extending from the lower portion of the harp, a substantially cup-shaped member having a central opening through which said last mentioned member passes, said reflector having a portion for disposition in said last mentioned cup-shaped member for support therein and a knob secured to the free end of said extending member for securing the said reflector to said harp.

4. In combination with a lamp shade having a spider and a spider ring whereby said shade may be attached to a depending socket, said socket being adapted to have an electric light bulb disposed therein positioned inside of said shade, means for detachably securing a reflector inwardly of said shade surrounding said bulb, in-

to said spider ring, a harp depending from'said annular member and framing said electric light bulb, a screw threaded member provided at the eluding an annular member adapted to be secured bottom of said harp and means associated there- HARRY SANDEL. 

